A 1 Mb/s-40 Mb/s human body channel communication transceiver

In this paper, we proposed a high data rate, low-power, and large random jitter tolerance wideband signaling (WBS) transceiver for human body channel communication (BCC). At the transmitter part, a spread spectrum clock generator is applied to reduce the electromagnetic emission. Subsequently, the proposed WBS transmitter uses a NRZI encoding scheme to transmit the data. At the receiver part, a blind 7X oversampling clock and data recovery (CDR) circuit with the vote mechanism can effectively recover the data which distorted by the frequency drift and random noise from body antenna effects. The proposed WBS transceiver is implemented in a standard performance 90nm CMOS process, and the core area is 0.15 mm. The supported data rate of the proposed WBS transceiver ranges from 1Mb/s to 40Mb/s. In addition, the power consumption is 1.94mW at 40Mb/s, and the bit energy is 0.0485 nJ/b.